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Copy file name to clipboardExpand all lines: articles/sql-database/sql-database-release-notes.md
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ms.subservice: service
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ms.devlang:
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ms.topic: conceptual
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ms.date: 05/07/2019
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ms.date: 05/15/2019
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ms.author: sstein
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---
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# SQL Database release notes
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| Feature | Details |
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| ---| --- |
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| Accelerated database recovery with single databases and elastic pools | For information, see [Accelerated Database Recovery](sql-database-accelerated-database-recovery.md).|
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|Approximate Count Distinct|For information, see [Approximate Count Distinct](https://docs.microsoft.com/sql/relational-databases/performance/intelligent-query-processing#approximate-query-processing).|
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|Batch Mode on Rowstore (under compatibility level 150)|For information, see [Batch Mode on Rowstore](https://docs.microsoft.com/sql/relational-databases/performance/intelligent-query-processing#batch-mode-on-rowstore).|
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| Data discovery & classification |For information, see [Azure SQL Database and SQL Data Warehouse data discovery & classification](sql-database-data-discovery-and-classification.md).|
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| Elastic database jobs | For information, see [Create, configure, and manage elastic jobs](elastic-jobs-overview.md). |
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| Elastic queries | For information, see [Elastic query overview](sql-database-elastic-query-overview.md). |
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| Elastic transactions |[Distributed transactions across cloud databases](sql-database-elastic-transactions-overview.md). |
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| Instance collation with managed instances |For information, see [Use PowerShell with Azure Resource Manager template to create a managed instance in Azure SQL Database](./scripts/sql-managed-instance-create-powershell-azure-resource-manager-template.md).|
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|Memory Grant Feedback (Row Mode) (under compatibility level 150)|For information, see [Memory Grant Feedback (Row Mode)](https://docs.microsoft.com/sql/relational-databases/performance/intelligent-query-processing#row-mode-memory-grant-feedback).|
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| Query editor in the Azure portal |For information, see [Use the Azure portal's SQL query editor to connect and query data](sql-database-connect-query-portal.md).|
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| R services / machine learning with single databases and elastic pools |For information, see [Machine Learning Services in Azure SQL Database](https://docs.microsoft.com/sql/advanced-analytics/what-s-new-in-sql-server-machine-learning-services?view=sql-server-2017#machine-learning-services-in-azure-sql-database).|
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| Recreate dropped databases with managed instances |For information, see [Re-create dropped databases in Azure SQL Managed Instance](https://medium.com/azure-sqldb-managed-instance/re-create-dropped-databases-in-azure-sql-managed-instance-dc369ed60266).|
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| Replication with managed instances |For information, see [Configure replication in an Azure SQL Database managed instance database](replication-with-sql-database-managed-instance.md).|
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| Serverless compute tier | For information, see [SQL Database serverless (preview)](sql-database-serverless.md).|
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| Elastic database jobs | For information, see [Create, configure, and manage elastic jobs](elastic-jobs-overview.md)|
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| Elastic transactions |[Distributed transactions across cloud databases](sql-database-elastic-transactions-overview.md)|
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| Elastic queries | For information, see [Elastic query overview](sql-database-elastic-query-overview.md)|
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| Replication with managed instances |For information, see [Configure replication in an Azure SQL Database managed instance database](replication-with-sql-database-managed-instance.md)|
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| Instance collation with managed instances |For information, see [Use PowerShell with Azure Resource Manager template to create a managed instance in Azure SQL Database](./scripts/sql-managed-instance-create-powershell-azure-resource-manager-template.md)|
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| R services / machine learning with single databases and elastic pools |For information, see [Machine Learning Services in Azure SQL Database](https://docs.microsoft.com/sql/advanced-analytics/what-s-new-in-sql-server-machine-learning-services?view=sql-server-2017#machine-learning-services-in-azure-sql-database)|
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| Accelerated database recovery with single databases and elastic pools | For information, see [Accelerated Database Recovery](sql-database-accelerated-database-recovery.md)|
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| Data discovery & classification |For information, see [Azure SQL Database and SQL Data Warehouse data discovery & classification](sql-database-data-discovery-and-classification.md)|
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| Transparent data encryption (TDE) with Bring Your Own Key (BYOK) with managed instances |For information, see [Azure SQL Transparent Data Encryption with customer-managed keys in Azure Key Vault: Bring Your Own Key support](transparent-data-encryption-byok-azure-sql.md)|
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| Recreate dropped databases with managed instances |For information, see [Re-create dropped databases in Azure SQL Managed Instance](https://medium.com/azure-sqldb-managed-instance/re-create-dropped-databases-in-azure-sql-managed-instance-dc369ed60266)|
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| Threat detection with managed instances |For information, see [Configure threat detection in Azure SQL Database managed instance](sql-database-managed-instance-threat-detection.md)|
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| Hyperscale service tiers with single databases |For information, see [Hyperscale service tier for up to 100 TB](sql-database-service-tier-hyperscale.md)|
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| Query editor in the Azure portal |For information, see [Use the Azure portal's SQL query editor to connect and query data](sql-database-connect-query-portal.md)|
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|Approximate Count Distinct|For information, see [Approximate Count Distinct](https://docs.microsoft.com/sql/relational-databases/performance/intelligent-query-processing#approximate-query-processing)|
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|Batch Mode on Rowstore (under compatibility level 150)|For information, see [Batch Mode on Rowstore](https://docs.microsoft.com/sql/relational-databases/performance/intelligent-query-processing#batch-mode-on-rowstore)|
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|Memory Grant Feedback (Row Mode) (under compatibility level 150)|For information, see [Memory Grant Feedback (Row Mode)](https://docs.microsoft.com/sql/relational-databases/performance/intelligent-query-processing#row-mode-memory-grant-feedback)|
|SQL Analytics|For information, see [Azure SQL Analytics](../azure-monitor/insights/azure-sql.md)|
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| Time zone support for managed instances|For more information, see [Time Zone in Azure SQL Database Managed Instance](sql-database-managed-instance-timezone.md)|
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|SQL Analytics|For information, see [Azure SQL Analytics](../azure-monitor/insights/azure-sql.md).|
| Threat detection with managed instances |For information, see [Configure threat detection in Azure SQL Database managed instance](sql-database-managed-instance-threat-detection.md).|
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| Time zone support for managed instances|For more information, see [Time Zone in Azure SQL Database Managed Instance](sql-database-managed-instance-timezone.md).|
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| Transparent data encryption (TDE) with Bring Your Own Key (BYOK) with managed instances |For information, see [Azure SQL Transparent Data Encryption with customer-managed keys in Azure Key Vault: Bring Your Own Key support](transparent-data-encryption-byok-azure-sql.md).|
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## May 2019
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### Service improvements
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| Service improvements | Details |
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| --- | --- |
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|Hyperscale service tier| For more information, see [Hyperscale service tier for up to 100 TB](sql-database-service-tier-hyperscale.md).|
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|Serverless compute tier| For more information, see [SQL Database serverless (preview)](sql-database-serverless.md).|
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|Hyperscale service tier released for general availability| For more information, see [Hyperscale service tier for up to 100 TB](sql-database-service-tier-hyperscale.md) and [Get high-performance scaling for your Azure database workloads with Hyperscale](https://azure.microsoft.com/blog/get-high-performance-scaling-for-your-azure-database-workloads-with-hyperscale/).|
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|Serverless compute tier released for public preview | For more information, see [SQL Database serverless (preview)](sql-database-serverless.md).|
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| Transaction log rates and target IOPS increased for databases using the vCore-based purchasing model| For more information, see [Resource limits for single databases using the vCore-based purchasing model](https://docs.microsoft.com/azure/sql-database/sql-database-vcore-resource-limits-single-databases) and [Resource limits for single databases using the DTU-based purchasing model](https://docs.microsoft.com/azure/sql-database/sql-database-dtu-resource-limits-single-databases).
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### Documentation improvements
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| Documentation improvements | Details |
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| --- | --- |
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| Hyperscale service tier docs updated for GA release| For more information, see [Hyperscale service tier for up to 100 TB](sql-database-service-tier-hyperscale.md).|
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|Serverless compute tier docs released with public preview| For more information, see [SQL Database serverless (preview)](sql-database-serverless.md).|
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## April 2019
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### Service improvements
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| Service improvements | Details |
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| --- | --- |
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| Public endpoints for managed instance | For more information, see [Using Azure SQL Database managed instance securely with public endpoint](sql-database-managed-instance-public-endpoint-securely.md)
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| Time zone support for managed instance | For more information, see [Time Zone in Azure SQL Database Managed Instance (Preview)](sql-database-managed-instance-timezone.md)
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| Public endpoints for managed instance in public preview| For more information, see [Using Azure SQL Database managed instance securely with public endpoint](sql-database-managed-instance-public-endpoint-securely.md).|
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| Time zone support for managed instance in public preview| For more information, see [Time Zone in Azure SQL Database Managed Instance](sql-database-managed-instance-timezone.md).|
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| Securing Azure SQL Databases with managed identities in second public preview release| See [Securing Azure SQL Databases with managed identities just got easier](https://azure.microsoft.com/blog/securing-azure-sql-databases-with-managed-identities-just-got-easier/).|
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### Documentation improvements
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| Documentation improvements | Details |
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| Public endpoints for managed instance | For more information, see [Using Azure SQL Database managed instance securely with public endpoint](sql-database-managed-instance-public-endpoint-securely.md)
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| Time zone support for managed instance | For more information, see [Time Zone in Azure SQL Database Managed Instance (Preview)](sql-database-managed-instance-timezone.md)
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| Public endpoints for managed instance in public preview| For more information, see [Using Azure SQL Database managed instance securely with public endpoint](sql-database-managed-instance-public-endpoint-securely.md).|
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| Time zone support for managed instance in public preview| For more information, see [Time Zone in Azure SQL Database Managed Instance](sql-database-managed-instance-timezone.md). |
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| Resource governance in Azure SQL Database | For more information, see [Resource governance in Azure SQL Database](https://azure.microsoft.com/blog/resource-governance-in-azure-sql-database/). || |
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## March 2019
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### Service improvements
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| Service improvements | Details |
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|General availability: Read scale-out support for Azure SQL Database | For more information, see [Read scale-out](sql-database-read-scale-out.md)|
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| Read scale-out support for Azure SQL Database released for general availability | For more information, see [Read scale-out](sql-database-read-scale-out.md).|
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### Documentation improvements
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| Documentation improvements | Details |
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| Time zone support for managed instances|For more information, see [Time Zone in Azure SQL Database Managed Instance](sql-database-managed-instance-timezone.md)|
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| Added log limits for single databases|For more information, see [Single database vCore resource limits](sql-database-vcore-resource-limits-single-databases.md).|
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| Added log limits for elastic pools and pooled databases|For more information, see [Elastic pools vCore resource limits](sql-database-vcore-resource-limits-elastic-pools.md).|
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| Added Transaction log rate governance| Added new content for [Transaction log rate governance](sql-database-resource-limits-database-server.md#transaction-log-rate-governance).|
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|Creating a resumable online index is now generally available| For more information, see [Create Index](https://docs.microsoft.com/sql/t-sql/statements/create-index-transact-sql).|
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|Managed instance support for route tables improved| For more information, see [Network requirements](sql-database-managed-instance-connectivity-architecture.md#network-requirements).|
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|Database rename supported in managed instance | For more details, see the [ALTER DATABASE](https://docs.microsoft.com/sql/t-sql/statements/alter-database-transact-sql?view=azuresqldb-mi-current) and [sp_rename](https://docs.microsoft.com/sql/relational-databases/system-stored-procedures/sp-rename-transact-sql) syntax.|
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|SQL Database as a source of reference data for Stream Analytics. | For more information, see [Stream Analytics](https://azure.microsoft.com/services/stream-analytics/).|
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|SQL Database as a source of reference data for Stream Analytics. | For more information, see [Stream Analytics](https://azure.microsoft.com/services/stream-analytics/) and [Azure Stream Analytics now supports Azure SQL Database as reference data input](https://azure.microsoft.com/blog/azure-stream-analytics-now-supports-azure-sql-database-as-reference-data-input/).|
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|Data Migration Assistance adds support for managed instance. |For more information, see [What's new in DMA](https://docs.microsoft.com/sql/dma/dma-whatsnew).|
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|SQL Server Migration Assistant adds support for target readiness assessment for managed instance. | For more information, see [SQL Server Migration Assistant](https://docs.microsoft.com/sql/ssma/sql-server-migration-assistant).
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|Data migration service supports migrating from Amazon RDS to managed instance | For more information, see [Tutorial: Migrate RDS SQL Server to Azure SQL Database or an Azure SQL Database managed instance online using DMS](../dms/tutorial-rds-sql-server-azure-sql-and-managed-instance-online.md).|
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|Updated import and export with bacpac file for managed instance support| For more information, see [Import from BACPAC](sql-database-import.md) and [Export to BACPAC](sql-database-export.md). |
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## January 2019
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### Service improvements
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| Documentation improvements | Details |
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| Managed instances and transactional replication | Added article about using [transactional replication with managed instances](replication-with-sql-database-managed-instance.md)|
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| Managed instances and transactional replication | Added article about using [transactional replication with managed instances](replication-with-sql-database-managed-instance.md).|
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| Added Azure AD with managed instance tutorial | This [Azure AD with managed instance](sql-database-managed-instance-aad-security-tutorial.md) tutorial shows you have to configure and test managed instance security using Azure AD logins. |
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| Updated content for job automation using Transact-SQL scripts | Updated and clarified content for using [job automation using Transact-SQL scripts](sql-database-job-automation-overview.md) for single databases, elastic pools, and managed instances |
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| Security content for managed instances updated | Updated and clarified content for the [security model for managed instances](sql-database-security-overview.md), and contrasted in with the security model for single databases and elastic pools |
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| Refreshed all quickstarts and tutorials | All of the quickstarts and tutorials in the [documentation](https://docs.microsoft.com/azure/sql-database) have been updated and refreshed to match changes in the Azure portal |
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| Added quickstart overview guides | Added a quickstart overview guide for [single databases](sql-database-quickstart-guide.md) and for [managed instances](sql-database-managed-instance-quickstart-guide.md)|
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| Updated content for job automation using Transact-SQL scripts | Updated and clarified content for using [job automation using Transact-SQL scripts](sql-database-job-automation-overview.md) for single databases, elastic pools, and managed instances.|
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| Security content for managed instances updated | Updated and clarified content for the [security model for managed instances](sql-database-security-overview.md), and contrasted in with the security model for single databases and elastic pools.|
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| Refreshed all quickstarts and tutorials | All of the quickstarts and tutorials in the [documentation](https://docs.microsoft.com/azure/sql-database) have been updated and refreshed to match changes in the Azure portal.|
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| Added quickstart overview guides | Added a quickstart overview guide for [single databases](sql-database-quickstart-guide.md) and for [managed instances](sql-database-managed-instance-quickstart-guide.md).|
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| Added SQL Database glossary of terms | This [terms glossary](sql-database-glossary-terms.md) article provides a definitive list of SQL Database terms and links to the primary conceptual page that explains the term in context. |
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